-LRB- CNN -RRB- Before a deadly fire that burned a home in Annapolis , Maryland , technology executive Don Pyle and his wife , Sandra , spent a day with their four grandchildren . The day included shopping for costumes , dinner at the Medieval Times restaurant and a sleepover at Pyle 's waterfront mansion .

Monday was a school holiday , and the children -- Alexis -LRB- Lexi -RRB- Boone , 8 ; Kaitlyn -LRB- Katie -RRB- Boone , 7 ; Charlotte Boone , 8 ; and Wesley -LRB- Wes -RRB- Boone , 6 -- stayed over , a family spokeswoman said .

Pyle , his wife and the four grandchildren are now feared dead after a suspicious fire destroyed the mansion early Monday morning . Authorities have recovered four bodies from the ruins . They continue to search for the others .

The smiling grandchildren and their grandparents are seen in images released by family members , who described a boundless and unconditional bond between the victims .

• Lexi loved her sister and new baby brother , her classmates , field hockey , lacrosse and ice skating , the family said in a statement Friday .

`` She was thoughtful , social , smart , and determined , '' according to the family . `` She loved her dog Sophie . Her favorite adventures included trips with her parents , grandparents , and cousins . Lexi wanted to be a vet or on television when she grew up . She was going to be famous . ''

• Katie loved her family and her new brother , the statement said . She was described as a kind and compassionate girl who enjoyed soccer , gymnastics , ice skating and singing to Taylor Swift . Her recent adventures included her birthday party with the Baltimore Ravens cheerleaders and a trip to New York City .

`` Having just turned 7 , she was loving and thoughtful beyond her years , '' the statement said .

• Charlotte loved her family , horses , basketball and swimming . Her friend held a special place in her heart , the statement said .

`` She was fun-loving , intelligent , and kind , '' the statement said . `` She wanted to be known as a gamer with an epic love of Minecraft . Charlotte loved making videos with her guinea pig , Oreo . Charlotte 's future dreams were to run an animal rescue . ''

• Wes loved his friends and family , Doctor Who , Legos , Minecraft , Plants vs Zombies and swimming , according to the family .

`` Wes was sweet and loving and looked up to his older sister immensely . He loved all his friends and he especially looked forward to seeing his classmates at school every day . He loved trips to the beach with his family . In his future , Wes wanted to build robots . ''

• Pyle loved his family , especially the grandchildren , according to the family . They affectionately called him `` Pop-Pop . '' He treated friends as family and enjoyed long-term friendships from high school . His also liked fishing , golf , skiing and entertaining .

`` Don loved the Ravens , Orioles , and Delaware Blue Hens Lacrosse . Don also cherished traveling with his wife . ''

• To his wife , Sandy , each grandchild occupied a special place in her heart , according to the family . They called her `` Dee-Dee . '' For her , too , friends were like family . She was passionate about the Ravens , Orioles , the beach and travel .

`` She was a one-of-a-kind original -- fun-loving , caring , and generous . She loved every animal , especially her rescue dogs , and contributed to numerous animal welfare groups . Sandy was incredibly sensitive to the needs of others and generous beyond words . ''

On Thursday , two bodies were retrieved from the ruins of the mansion , authorities said . Two other bodies were recovered the day before .

The remains were taken to a medical examiner 's officer for autopsies and identification , Anne Arundel County Fire Department Capt. Russ Davies said in a statement .

`` There are still two occupants unaccounted for , '' he said . `` This remains a complex scene and much work remains to be done . ''

The family of the victims also released a statement Thursday .

`` On behalf of the Boone and Pyle families , we wish to express our gratitude and appreciation for the love and support being shared with us during this tragic event , '' the family 's statement said . `` We are blessed that so many family , friends and neighbors have come together for us in our time of need . ''

The Thursday statement confirmed the identities of the six people firefighters and others have been searching for in the ruins of the waterfront home .

`` Our love for our family is boundless , '' the statement said . `` Our loss demands time and quiet reflection to process these feelings . We ask that you respect our need for privacy . Life is fragile . Make time today to embrace your loved ones . ''

Local and federal officials were able to secure the structure and access the foundation of the 16,000-square-foot house Wednesday . Cadaver dogs led them to the bodies , officials said .

Officials would not discuss where the bodies were or possible causes of death .

Authorities are treating the house as a crime scene . Officials said it is standard procedure for a case such as this , and no evidence has been found to indicate suspicious activity .

The house belonged to Pyle , chief operating officer for ScienceLogic , company spokesman Antonio Piraino said .

The sheer size of the structure -- and the fact that three-fourths of it had collapsed into the basement , with deep piles of debris still smoldering -- compounded the search , Anne Arundel County Fire Capt. Robert Howarth said Tuesday . He is leading the investigation , along with a team from the federal Bureau of Alcohol , Tobacco , Firearms and Explosives .

`` You 're looking at five standard houses put together , '' he said Tuesday . `` This is more of a commercial fire than it is a residential fire . There are a lot of businesses that are n't 16,000 square feet . That adds to it . ''

Pyle had not been heard from Monday , and his colleagues at ScienceLogic were `` hoping for a miracle , '' CNN affiliate WJLA-TV in Washington reported .

Heavy equipment was brought in to aid in the search for victims and clues , a process that could take days .

`` We have some very unique challenges with this house , '' Howarth said . `` The construction of the house contained a lot of very heavy materials . We 're looking at some steel beams that weigh in the area of 7 tons . ''

When the first firefighters arrived early Monday , they received conflicting reports about whether the family may have been out of town . But after interviews with relatives , it was determined that six members of the family were missing , fire officials said .

Fire officials said they were alerted to the fire about 3:30 a.m. Monday . About 80 firefighters responded .

The ATF national response team responded because the fire was deemed suspicious , Howarth said .

The Fire Department said crews had difficulty putting out the fire because the house is secluded , apparently with no fire hydrants on the scene .

Photos the Fire Department posted on Twitter showed hoses stretched for long distances . Davies said it took hours for department tanker trucks and a fire boat on an adjacent creek to bring the fire under control .

Pyle 's company biography described him as an industry veteran who held multiple CEO positions , with more than 25 years ' experience in information technology infrastructure software and hardware management .

Pyle told The Washington Post last year that after holding positions in a family business , he decided to look for an `` industry that was in its infancy and something that would have growth potential . '' He started in a sales position in a firm that connected computers over transmission lines , and later sold both hardware and software components for the Internet .

Pyle told the newspaper he eventually moved from sales to sales management to general management positions . In 1992 , the company went public and was sold to Cisco Systems five years later for $ 4.2 billion , according to the Post .

CNN 's Ralph Ellis , Wes Bruer , Shimon Prokupecz and Lindy Royce contributed to this report .

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Relatives remember two adults and four children thought to have died in the fire

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Relatives have identified four children thought to have perished

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Technology executive Don Pyle owned the house